Scenario to ERD

Suppose you are given the following requirements for a simple database for the National

Hockey League (NHL):

• · the NHL has many teams,
• · each team has a name, a city, a coach, a captain, and a set of players,
• · each player belongs to only one team,
• · each player has a name, a position (such as left wing or goalie), a skill level, and a set
• of injury records,
• · a team captain is also a player,
• · a game is played between two teams (referred to as host_team and guest_team) and has a date (such as May 11th, 1999) and a score (such as 4 to 2).

Construct a clean and concise ER diagram for the NHL database using the Chen notation

as in your textbook. List your assumptions and clearly indicate the cardinality mappings

as well as any role indicators in your ER diagram.